for the following products
4-[(1,3-Dioxybutyl)amino]-5-methoxy-2-methyl-benzenesulfonic acid monosodium salt | N-Acetoacet-p-cresidine-o-sulfonic acid sodium | N-Acetoacetcresidine sulfonic acid sodium salt and 3-Acetoacetylamino-4-methoxytoluene-6-sulfonic acid sodium salt
